Enable `Lint/ErbNewArguments` cop to avoid the deprecated arguments warning

Related 5754a29a97.

And follows Ruby standard library style https://github.com/ruby/ruby/commit/3406c5d.

.rubocop.yml

@@ -179,6 +179,9 @@ Layout/TrailingWhitespace:
 Style/UnneededPercentQ:
   Enabled: true
 
+Lint/ErbNewArguments:
+  Enabled: true
+
 # Use my_method(my_arg) not my_method( my_arg ) or my_method my_arg.
 Lint/RequireParentheses:
   Enabled: true

railties/lib/rails/generators/migration.rb

@@ -63,8 +63,7 @@ module Rails
         numbered_destination = File.join(dir, ["%migration_number%", base].join("_"))
 
         create_migration numbered_destination, nil, config do
-          match = ERB.version.match(/\Aerb\.rb \[(?<version>[^ ]+) /)
-          if match && match[:version] >= "2.2.0" # Ruby 2.6+
+          if ERB.instance_method(:initialize).parameters.assoc(:key) # Ruby 2.6+
             ERB.new(::File.binread(source), trim_mode: "-", eoutvar: "@output_buffer").result(context)
           else
             ERB.new(::File.binread(source), nil, "-", "@output_buffer").result(context)

tasks/release.rb

@@ -314,8 +314,7 @@ task :announce do
     require "erb"
     template = File.read("../tasks/release_announcement_draft.erb")
 
-    match = ERB.version.match(/\Aerb\.rb \[(?<version>[^ ]+) /)
-    if match && match[:version] >= "2.2.0" # Ruby 2.6+
+    if ERB.instance_method(:initialize).parameters.assoc(:key) # Ruby 2.6+
       puts ERB.new(template, trim_mode: "<>").result(binding)
     else
       puts ERB.new(template, nil, "<>").result(binding)